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Finding the Fourth Proportional to 950.66, 1,312.64 and 714.95

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Solution

The fourth proportional to 950.66, 1,312.64 and 714.95 is: 987.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.66 : 1,312.64 = 714.95 : x
  2. Step 2: Convert to fraction form
    950.66/1,312.64 = 714.95/x
  3. Step 3: Cross multiply
    950.66x = 1,312.64 × 714.95
  4. Step 4: Simplify right side
    950.66x = 938,471.97
  5. Step 5: Solve for x
    x = 938,471.97/950.66
  6. Step 6: Final answer
    x = 987.18

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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.