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Finding the Fourth Proportional to 1,113.26, 1,666.37 and 624.83

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Solution

The fourth proportional to 1,113.26, 1,666.37 and 624.83 is: 935.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.26 : 1,666.37 = 624.83 : x
  2. Step 2: Convert to fraction form
    1,113.26/1,666.37 = 624.83/x
  3. Step 3: Cross multiply
    1,113.26x = 1,666.37 × 624.83
  4. Step 4: Simplify right side
    1,113.26x = 1,041,191.20
  5. Step 5: Solve for x
    x = 1,041,191.20/1,113.26
  6. Step 6: Final answer
    x = 935.27

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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.