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Finding the Fourth Proportional to 700.28, 966.10 and 420.52

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Solution

The fourth proportional to 700.28, 966.10 and 420.52 is: 580.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.28 : 966.10 = 420.52 : x
  2. Step 2: Convert to fraction form
    700.28/966.10 = 420.52/x
  3. Step 3: Cross multiply
    700.28x = 966.10 × 420.52
  4. Step 4: Simplify right side
    700.28x = 406,257.44
  5. Step 5: Solve for x
    x = 406,257.44/700.28
  6. Step 6: Final answer
    x = 580.14

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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.