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Finding the Fourth Proportional to 708.95, 1,061.61 and 526.10

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Solution

The fourth proportional to 708.95, 1,061.61 and 526.10 is: 787.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.95 : 1,061.61 = 526.10 : x
  2. Step 2: Convert to fraction form
    708.95/1,061.61 = 526.10/x
  3. Step 3: Cross multiply
    708.95x = 1,061.61 × 526.10
  4. Step 4: Simplify right side
    708.95x = 558,505.74
  5. Step 5: Solve for x
    x = 558,505.74/708.95
  6. Step 6: Final answer
    x = 787.79

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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.