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Finding the Fourth Proportional to 586.67, 808.20 and 476.87

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Solution

The fourth proportional to 586.67, 808.20 and 476.87 is: 656.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.67 : 808.20 = 476.87 : x
  2. Step 2: Convert to fraction form
    586.67/808.20 = 476.87/x
  3. Step 3: Cross multiply
    586.67x = 808.20 × 476.87
  4. Step 4: Simplify right side
    586.67x = 385,402.29
  5. Step 5: Solve for x
    x = 385,402.29/586.67
  6. Step 6: Final answer
    x = 656.94

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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.