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Finding the Fourth Proportional to 877.46, 1,315.04 and 356.85

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Solution

The fourth proportional to 877.46, 1,315.04 and 356.85 is: 534.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    877.46 : 1,315.04 = 356.85 : x
  2. Step 2: Convert to fraction form
    877.46/1,315.04 = 356.85/x
  3. Step 3: Cross multiply
    877.46x = 1,315.04 × 356.85
  4. Step 4: Simplify right side
    877.46x = 469,272.92
  5. Step 5: Solve for x
    x = 469,272.92/877.46
  6. Step 6: Final answer
    x = 534.81

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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.