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Finding the Fourth Proportional to 1,528.86, 2,292.08 and 748.53

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Solution

The fourth proportional to 1,528.86, 2,292.08 and 748.53 is: 1,122.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.86 : 2,292.08 = 748.53 : x
  2. Step 2: Convert to fraction form
    1,528.86/2,292.08 = 748.53/x
  3. Step 3: Cross multiply
    1,528.86x = 2,292.08 × 748.53
  4. Step 4: Simplify right side
    1,528.86x = 1,715,690.64
  5. Step 5: Solve for x
    x = 1,715,690.64/1,528.86
  6. Step 6: Final answer
    x = 1,122.20

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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.