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Finding the Fourth Proportional to 700.48, 966.49 and 479.35

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Solution

The fourth proportional to 700.48, 966.49 and 479.35 is: 661.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.48 : 966.49 = 479.35 : x
  2. Step 2: Convert to fraction form
    700.48/966.49 = 479.35/x
  3. Step 3: Cross multiply
    700.48x = 966.49 × 479.35
  4. Step 4: Simplify right side
    700.48x = 463,286.98
  5. Step 5: Solve for x
    x = 463,286.98/700.48
  6. Step 6: Final answer
    x = 661.39

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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.