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Finding the Fourth Proportional to 935.84, 1,392.76 and 932.96

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Solution

The fourth proportional to 935.84, 1,392.76 and 932.96 is: 1,388.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.84 : 1,392.76 = 932.96 : x
  2. Step 2: Convert to fraction form
    935.84/1,392.76 = 932.96/x
  3. Step 3: Cross multiply
    935.84x = 1,392.76 × 932.96
  4. Step 4: Simplify right side
    935.84x = 1,299,389.37
  5. Step 5: Solve for x
    x = 1,299,389.37/935.84
  6. Step 6: Final answer
    x = 1,388.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.