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Finding the Fourth Proportional to 562.08, 772.32 and 458.40

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Solution

The fourth proportional to 562.08, 772.32 and 458.40 is: 629.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.08 : 772.32 = 458.40 : x
  2. Step 2: Convert to fraction form
    562.08/772.32 = 458.40/x
  3. Step 3: Cross multiply
    562.08x = 772.32 × 458.40
  4. Step 4: Simplify right side
    562.08x = 354,031.49
  5. Step 5: Solve for x
    x = 354,031.49/562.08
  6. Step 6: Final answer
    x = 629.86

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.