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Finding the Fourth Proportional to 695.42, 1,045.02 and 371.02

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Solution

The fourth proportional to 695.42, 1,045.02 and 371.02 is: 557.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.42 : 1,045.02 = 371.02 : x
  2. Step 2: Convert to fraction form
    695.42/1,045.02 = 371.02/x
  3. Step 3: Cross multiply
    695.42x = 1,045.02 × 371.02
  4. Step 4: Simplify right side
    695.42x = 387,723.32
  5. Step 5: Solve for x
    x = 387,723.32/695.42
  6. Step 6: Final answer
    x = 557.54

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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.