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Finding the Fourth Proportional to 1,110.30, 1,665.63 and 461.07

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Solution

The fourth proportional to 1,110.30, 1,665.63 and 461.07 is: 691.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.30 : 1,665.63 = 461.07 : x
  2. Step 2: Convert to fraction form
    1,110.30/1,665.63 = 461.07/x
  3. Step 3: Cross multiply
    1,110.30x = 1,665.63 × 461.07
  4. Step 4: Simplify right side
    1,110.30x = 767,972.02
  5. Step 5: Solve for x
    x = 767,972.02/1,110.30
  6. Step 6: Final answer
    x = 691.68

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1.5x scale

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.