Home / 1,020.18-1,529.52-472.08

Finding the Fourth Proportional to 1,020.18, 1,529.52 and 472.08

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Solution

The fourth proportional to 1,020.18, 1,529.52 and 472.08 is: 707.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.18 : 1,529.52 = 472.08 : x
  2. Step 2: Convert to fraction form
    1,020.18/1,529.52 = 472.08/x
  3. Step 3: Cross multiply
    1,020.18x = 1,529.52 × 472.08
  4. Step 4: Simplify right side
    1,020.18x = 722,055.80
  5. Step 5: Solve for x
    x = 722,055.80/1,020.18
  6. Step 6: Final answer
    x = 707.77

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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.