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Finding the Fourth Proportional to 700.47, 966.87 and 479.34

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Solution

The fourth proportional to 700.47, 966.87 and 479.34 is: 661.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.47 : 966.87 = 479.34 : x
  2. Step 2: Convert to fraction form
    700.47/966.87 = 479.34/x
  3. Step 3: Cross multiply
    700.47x = 966.87 × 479.34
  4. Step 4: Simplify right side
    700.47x = 463,459.47
  5. Step 5: Solve for x
    x = 463,459.47/700.47
  6. Step 6: Final answer
    x = 661.64

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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.