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Finding the Fourth Proportional to 699.60, 966.24 and 607.20

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Solution

The fourth proportional to 699.60, 966.24 and 607.20 is: 838.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.60 : 966.24 = 607.20 : x
  2. Step 2: Convert to fraction form
    699.60/966.24 = 607.20/x
  3. Step 3: Cross multiply
    699.60x = 966.24 × 607.20
  4. Step 4: Simplify right side
    699.60x = 586,700.93
  5. Step 5: Solve for x
    x = 586,700.93/699.60
  6. Step 6: Final answer
    x = 838.62

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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.