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Finding the Fourth Proportional to 582.35, 872.71 and 437.90

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Solution

The fourth proportional to 582.35, 872.71 and 437.90 is: 656.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.35 : 872.71 = 437.90 : x
  2. Step 2: Convert to fraction form
    582.35/872.71 = 437.90/x
  3. Step 3: Cross multiply
    582.35x = 872.71 × 437.90
  4. Step 4: Simplify right side
    582.35x = 382,159.71
  5. Step 5: Solve for x
    x = 382,159.71/582.35
  6. Step 6: Final answer
    x = 656.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.