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Finding the Fourth Proportional to 699.88, 963.38 and 607.72

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Solution

The fourth proportional to 699.88, 963.38 and 607.72 is: 836.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.88 : 963.38 = 607.72 : x
  2. Step 2: Convert to fraction form
    699.88/963.38 = 607.72/x
  3. Step 3: Cross multiply
    699.88x = 963.38 × 607.72
  4. Step 4: Simplify right side
    699.88x = 585,465.29
  5. Step 5: Solve for x
    x = 585,465.29/699.88
  6. Step 6: Final answer
    x = 836.52

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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.