Home / 920.03-1,269.59-500.36

Finding the Fourth Proportional to 920.03, 1,269.59 and 500.36

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Solution

The fourth proportional to 920.03, 1,269.59 and 500.36 is: 690.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.03 : 1,269.59 = 500.36 : x
  2. Step 2: Convert to fraction form
    920.03/1,269.59 = 500.36/x
  3. Step 3: Cross multiply
    920.03x = 1,269.59 × 500.36
  4. Step 4: Simplify right side
    920.03x = 635,243.20
  5. Step 5: Solve for x
    x = 635,243.20/920.03
  6. Step 6: Final answer
    x = 690.46

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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.