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Finding the Fourth Proportional to 917.59, 1,266.22 and 524.59

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Solution

The fourth proportional to 917.59, 1,266.22 and 524.59 is: 723.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    917.59 : 1,266.22 = 524.59 : x
  2. Step 2: Convert to fraction form
    917.59/1,266.22 = 524.59/x
  3. Step 3: Cross multiply
    917.59x = 1,266.22 × 524.59
  4. Step 4: Simplify right side
    917.59x = 664,237.40
  5. Step 5: Solve for x
    x = 664,237.40/917.59
  6. Step 6: Final answer
    x = 723.89

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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.