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Finding the Fourth Proportional to 1,158.48, 1,737.58 and 378.47

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Solution

The fourth proportional to 1,158.48, 1,737.58 and 378.47 is: 567.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.48 : 1,737.58 = 378.47 : x
  2. Step 2: Convert to fraction form
    1,158.48/1,737.58 = 378.47/x
  3. Step 3: Cross multiply
    1,158.48x = 1,737.58 × 378.47
  4. Step 4: Simplify right side
    1,158.48x = 657,624.95
  5. Step 5: Solve for x
    x = 657,624.95/1,158.48
  6. Step 6: Final answer
    x = 567.66

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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.