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Finding the Fourth Proportional to 701.59, 1,051.56 and 392.98

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Solution

The fourth proportional to 701.59, 1,051.56 and 392.98 is: 589.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.59 : 1,051.56 = 392.98 : x
  2. Step 2: Convert to fraction form
    701.59/1,051.56 = 392.98/x
  3. Step 3: Cross multiply
    701.59x = 1,051.56 × 392.98
  4. Step 4: Simplify right side
    701.59x = 413,242.05
  5. Step 5: Solve for x
    x = 413,242.05/701.59
  6. Step 6: Final answer
    x = 589.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.