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Finding the Fourth Proportional to 504.76, 696.36 and 308.32

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Solution

The fourth proportional to 504.76, 696.36 and 308.32 is: 425.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.76 : 696.36 = 308.32 : x
  2. Step 2: Convert to fraction form
    504.76/696.36 = 308.32/x
  3. Step 3: Cross multiply
    504.76x = 696.36 × 308.32
  4. Step 4: Simplify right side
    504.76x = 214,701.72
  5. Step 5: Solve for x
    x = 214,701.72/504.76
  6. Step 6: Final answer
    x = 425.35

Related Problems

Find fourth proportional to 252.38, 348.18 and 154.16
Half scale
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Double scale
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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.