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Finding the Fourth Proportional to 586.28, 808.49 and 497.66

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Solution

The fourth proportional to 586.28, 808.49 and 497.66 is: 686.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.28 : 808.49 = 497.66 : x
  2. Step 2: Convert to fraction form
    586.28/808.49 = 497.66/x
  3. Step 3: Cross multiply
    586.28x = 808.49 × 497.66
  4. Step 4: Simplify right side
    586.28x = 402,352.67
  5. Step 5: Solve for x
    x = 402,352.67/586.28
  6. Step 6: Final answer
    x = 686.28

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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.