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Finding the Fourth Proportional to 497.53, 686.20 and 322.57

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Solution

The fourth proportional to 497.53, 686.20 and 322.57 is: 444.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.53 : 686.20 = 322.57 : x
  2. Step 2: Convert to fraction form
    497.53/686.20 = 322.57/x
  3. Step 3: Cross multiply
    497.53x = 686.20 × 322.57
  4. Step 4: Simplify right side
    497.53x = 221,347.53
  5. Step 5: Solve for x
    x = 221,347.53/497.53
  6. Step 6: Final answer
    x = 444.89

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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.