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Finding the Fourth Proportional to 679.68, 935.82 and 614.88

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Solution

The fourth proportional to 679.68, 935.82 and 614.88 is: 846.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.68 : 935.82 = 614.88 : x
  2. Step 2: Convert to fraction form
    679.68/935.82 = 614.88/x
  3. Step 3: Cross multiply
    679.68x = 935.82 × 614.88
  4. Step 4: Simplify right side
    679.68x = 575,417.00
  5. Step 5: Solve for x
    x = 575,417.00/679.68
  6. Step 6: Final answer
    x = 846.60

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1.5x scale

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.