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Finding the Fourth Proportional to 696.71, 958.61 and 603.15

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Solution

The fourth proportional to 696.71, 958.61 and 603.15 is: 829.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.71 : 958.61 = 603.15 : x
  2. Step 2: Convert to fraction form
    696.71/958.61 = 603.15/x
  3. Step 3: Cross multiply
    696.71x = 958.61 × 603.15
  4. Step 4: Simplify right side
    696.71x = 578,182.61
  5. Step 5: Solve for x
    x = 578,182.61/696.71
  6. Step 6: Final answer
    x = 829.88

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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.