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Finding the Fourth Proportional to 457.32, 631.12 and 250.32

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Solution

The fourth proportional to 457.32, 631.12 and 250.32 is: 345.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.32 : 631.12 = 250.32 : x
  2. Step 2: Convert to fraction form
    457.32/631.12 = 250.32/x
  3. Step 3: Cross multiply
    457.32x = 631.12 × 250.32
  4. Step 4: Simplify right side
    457.32x = 157,981.96
  5. Step 5: Solve for x
    x = 157,981.96/457.32
  6. Step 6: Final answer
    x = 345.45

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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.