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Finding the Fourth Proportional to 654.76, 903.59 and 392.77

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Solution

The fourth proportional to 654.76, 903.59 and 392.77 is: 542.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.76 : 903.59 = 392.77 : x
  2. Step 2: Convert to fraction form
    654.76/903.59 = 392.77/x
  3. Step 3: Cross multiply
    654.76x = 903.59 × 392.77
  4. Step 4: Simplify right side
    654.76x = 354,903.04
  5. Step 5: Solve for x
    x = 354,903.04/654.76
  6. Step 6: Final answer
    x = 542.04

Related Problems

Find fourth proportional to 327.38, 451.80 and 196.39
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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.