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Finding the Fourth Proportional to 677.58, 935.52 and 631.08

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Solution

The fourth proportional to 677.58, 935.52 and 631.08 is: 871.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.58 : 935.52 = 631.08 : x
  2. Step 2: Convert to fraction form
    677.58/935.52 = 631.08/x
  3. Step 3: Cross multiply
    677.58x = 935.52 × 631.08
  4. Step 4: Simplify right side
    677.58x = 590,387.96
  5. Step 5: Solve for x
    x = 590,387.96/677.58
  6. Step 6: Final answer
    x = 871.32

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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.