Home / 920.04-1,269.28-570.12

Finding the Fourth Proportional to 920.04, 1,269.28 and 570.12

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Solution

The fourth proportional to 920.04, 1,269.28 and 570.12 is: 786.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.04 : 1,269.28 = 570.12 : x
  2. Step 2: Convert to fraction form
    920.04/1,269.28 = 570.12/x
  3. Step 3: Cross multiply
    920.04x = 1,269.28 × 570.12
  4. Step 4: Simplify right side
    920.04x = 723,641.91
  5. Step 5: Solve for x
    x = 723,641.91/920.04
  6. Step 6: Final answer
    x = 786.53

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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.