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Finding the Fourth Proportional to 700.19, 966.27 and 389.69

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Solution

The fourth proportional to 700.19, 966.27 and 389.69 is: 537.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.19 : 966.27 = 389.69 : x
  2. Step 2: Convert to fraction form
    700.19/966.27 = 389.69/x
  3. Step 3: Cross multiply
    700.19x = 966.27 × 389.69
  4. Step 4: Simplify right side
    700.19x = 376,545.76
  5. Step 5: Solve for x
    x = 376,545.76/700.19
  6. Step 6: Final answer
    x = 537.78

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Half scale
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Double scale
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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.