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Finding the Fourth Proportional to 700.32, 965.48 and 678.79

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Solution

The fourth proportional to 700.32, 965.48 and 678.79 is: 935.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.32 : 965.48 = 678.79 : x
  2. Step 2: Convert to fraction form
    700.32/965.48 = 678.79/x
  3. Step 3: Cross multiply
    700.32x = 965.48 × 678.79
  4. Step 4: Simplify right side
    700.32x = 655,358.17
  5. Step 5: Solve for x
    x = 655,358.17/700.32
  6. Step 6: Final answer
    x = 935.80

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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.