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Finding the Fourth Proportional to 956.55, 1,320.04 and 536.90

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Solution

The fourth proportional to 956.55, 1,320.04 and 536.90 is: 740.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.55 : 1,320.04 = 536.90 : x
  2. Step 2: Convert to fraction form
    956.55/1,320.04 = 536.90/x
  3. Step 3: Cross multiply
    956.55x = 1,320.04 × 536.90
  4. Step 4: Simplify right side
    956.55x = 708,730.97
  5. Step 5: Solve for x
    x = 708,730.97/956.55
  6. Step 6: Final answer
    x = 740.93

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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.