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Finding the Fourth Proportional to 586.74, 880.11 and 491.22

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Solution

The fourth proportional to 586.74, 880.11 and 491.22 is: 736.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.74 : 880.11 = 491.22 : x
  2. Step 2: Convert to fraction form
    586.74/880.11 = 491.22/x
  3. Step 3: Cross multiply
    586.74x = 880.11 × 491.22
  4. Step 4: Simplify right side
    586.74x = 432,327.63
  5. Step 5: Solve for x
    x = 432,327.63/586.74
  6. Step 6: Final answer
    x = 736.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.