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Finding the Fourth Proportional to 530.37, 730.44 and 528.75

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Solution

The fourth proportional to 530.37, 730.44 and 528.75 is: 728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.37 : 730.44 = 528.75 : x
  2. Step 2: Convert to fraction form
    530.37/730.44 = 528.75/x
  3. Step 3: Cross multiply
    530.37x = 730.44 × 528.75
  4. Step 4: Simplify right side
    530.37x = 386,220.15
  5. Step 5: Solve for x
    x = 386,220.15/530.37
  6. Step 6: Final answer
    x = 728.21

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Double scale
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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.