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Finding the Fourth Proportional to 372.59, 514.52 and 317.31

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Solution

The fourth proportional to 372.59, 514.52 and 317.31 is: 438.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.59 : 514.52 = 317.31 : x
  2. Step 2: Convert to fraction form
    372.59/514.52 = 317.31/x
  3. Step 3: Cross multiply
    372.59x = 514.52 × 317.31
  4. Step 4: Simplify right side
    372.59x = 163,260.02
  5. Step 5: Solve for x
    x = 163,260.02/372.59
  6. Step 6: Final answer
    x = 438.18

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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.