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Finding the Fourth Proportional to 1,988, 2,981.03 and 601.07

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Solution

The fourth proportional to 1,988, 2,981.03 and 601.07 is: 901.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988 : 2,981.03 = 601.07 : x
  2. Step 2: Convert to fraction form
    1,988/2,981.03 = 601.07/x
  3. Step 3: Cross multiply
    1,988x = 2,981.03 × 601.07
  4. Step 4: Simplify right side
    1,988x = 1,791,807.70
  5. Step 5: Solve for x
    x = 1,791,807.70/1,988
  6. Step 6: Final answer
    x = 901.31

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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.