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Finding the Fourth Proportional to 530.76, 730.82 and 451.92

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Solution

The fourth proportional to 530.76, 730.82 and 451.92 is: 622.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.76 : 730.82 = 451.92 : x
  2. Step 2: Convert to fraction form
    530.76/730.82 = 451.92/x
  3. Step 3: Cross multiply
    530.76x = 730.82 × 451.92
  4. Step 4: Simplify right side
    530.76x = 330,272.17
  5. Step 5: Solve for x
    x = 330,272.17/530.76
  6. Step 6: Final answer
    x = 622.26

Related Problems

Find fourth proportional to 265.38, 365.41 and 225.96
Half scale
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Double scale
Find fourth proportional to 531.76, 732.20 and 452.92
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.