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Finding the Fourth Proportional to 677.79, 935.61 and 456.93

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Solution

The fourth proportional to 677.79, 935.61 and 456.93 is: 630.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.79 : 935.61 = 456.93 : x
  2. Step 2: Convert to fraction form
    677.79/935.61 = 456.93/x
  3. Step 3: Cross multiply
    677.79x = 935.61 × 456.93
  4. Step 4: Simplify right side
    677.79x = 427,501.31
  5. Step 5: Solve for x
    x = 427,501.31/677.79
  6. Step 6: Final answer
    x = 630.73

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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.