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Finding the Fourth Proportional to 1,130.52, 1,693.02 and 697.08

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Solution

The fourth proportional to 1,130.52, 1,693.02 and 697.08 is: 1,043.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.52 : 1,693.02 = 697.08 : x
  2. Step 2: Convert to fraction form
    1,130.52/1,693.02 = 697.08/x
  3. Step 3: Cross multiply
    1,130.52x = 1,693.02 × 697.08
  4. Step 4: Simplify right side
    1,130.52x = 1,180,170.38
  5. Step 5: Solve for x
    x = 1,180,170.38/1,130.52
  6. Step 6: Final answer
    x = 1,043.92

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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.