Home / 920.13-1,269.75-527.13

Finding the Fourth Proportional to 920.13, 1,269.75 and 527.13

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Solution

The fourth proportional to 920.13, 1,269.75 and 527.13 is: 727.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.13 : 1,269.75 = 527.13 : x
  2. Step 2: Convert to fraction form
    920.13/1,269.75 = 527.13/x
  3. Step 3: Cross multiply
    920.13x = 1,269.75 × 527.13
  4. Step 4: Simplify right side
    920.13x = 669,323.32
  5. Step 5: Solve for x
    x = 669,323.32/920.13
  6. Step 6: Final answer
    x = 727.42

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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.