Home / 920.03-1,267.80-710.24

Finding the Fourth Proportional to 920.03, 1,267.80 and 710.24

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Solution

The fourth proportional to 920.03, 1,267.80 and 710.24 is: 978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.03 : 1,267.80 = 710.24 : x
  2. Step 2: Convert to fraction form
    920.03/1,267.80 = 710.24/x
  3. Step 3: Cross multiply
    920.03x = 1,267.80 × 710.24
  4. Step 4: Simplify right side
    920.03x = 900,442.27
  5. Step 5: Solve for x
    x = 900,442.27/920.03
  6. Step 6: Final answer
    x = 978.71

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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.