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Finding the Fourth Proportional to 972.37, 1,341.04 and 657.55

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Solution

The fourth proportional to 972.37, 1,341.04 and 657.55 is: 906.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    972.37 : 1,341.04 = 657.55 : x
  2. Step 2: Convert to fraction form
    972.37/1,341.04 = 657.55/x
  3. Step 3: Cross multiply
    972.37x = 1,341.04 × 657.55
  4. Step 4: Simplify right side
    972.37x = 881,790.86
  5. Step 5: Solve for x
    x = 881,790.86/972.37
  6. Step 6: Final answer
    x = 906.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.