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Finding the Fourth Proportional to 956.46, 1,319.93 and 677.18

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Solution

The fourth proportional to 956.46, 1,319.93 and 677.18 is: 934.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.46 : 1,319.93 = 677.18 : x
  2. Step 2: Convert to fraction form
    956.46/1,319.93 = 677.18/x
  3. Step 3: Cross multiply
    956.46x = 1,319.93 × 677.18
  4. Step 4: Simplify right side
    956.46x = 893,825.29
  5. Step 5: Solve for x
    x = 893,825.29/956.46
  6. Step 6: Final answer
    x = 934.51

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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.