Home / 1,021.34-1,531.10-473.08

Finding the Fourth Proportional to 1,021.34, 1,531.10 and 473.08

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Solution

The fourth proportional to 1,021.34, 1,531.10 and 473.08 is: 709.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.34 : 1,531.10 = 473.08 : x
  2. Step 2: Convert to fraction form
    1,021.34/1,531.10 = 473.08/x
  3. Step 3: Cross multiply
    1,021.34x = 1,531.10 × 473.08
  4. Step 4: Simplify right side
    1,021.34x = 724,330.14
  5. Step 5: Solve for x
    x = 724,330.14/1,021.34
  6. Step 6: Final answer
    x = 709.19

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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.