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Finding the Fourth Proportional to 1,295.72, 1,943.58 and 474.02

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Solution

The fourth proportional to 1,295.72, 1,943.58 and 474.02 is: 711.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.72 : 1,943.58 = 474.02 : x
  2. Step 2: Convert to fraction form
    1,295.72/1,943.58 = 474.02/x
  3. Step 3: Cross multiply
    1,295.72x = 1,943.58 × 474.02
  4. Step 4: Simplify right side
    1,295.72x = 921,295.79
  5. Step 5: Solve for x
    x = 921,295.79/1,295.72
  6. Step 6: Final answer
    x = 711.03

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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.