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Finding the Fourth Proportional to 591.18, 814.95 and 497.58

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Solution

The fourth proportional to 591.18, 814.95 and 497.58 is: 685.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.18 : 814.95 = 497.58 : x
  2. Step 2: Convert to fraction form
    591.18/814.95 = 497.58/x
  3. Step 3: Cross multiply
    591.18x = 814.95 × 497.58
  4. Step 4: Simplify right side
    591.18x = 405,502.82
  5. Step 5: Solve for x
    x = 405,502.82/591.18
  6. Step 6: Final answer
    x = 685.92

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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.