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Finding the Fourth Proportional to 1,462.93, 2,017.10 and 990.29

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Solution

The fourth proportional to 1,462.93, 2,017.10 and 990.29 is: 1,365.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,462.93 : 2,017.10 = 990.29 : x
  2. Step 2: Convert to fraction form
    1,462.93/2,017.10 = 990.29/x
  3. Step 3: Cross multiply
    1,462.93x = 2,017.10 × 990.29
  4. Step 4: Simplify right side
    1,462.93x = 1,997,521.48
  5. Step 5: Solve for x
    x = 1,997,521.48/1,462.93
  6. Step 6: Final answer
    x = 1,365.43

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1.5x scale

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.