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Finding the Fourth Proportional to 1,269.95, 1,752.28 and 710.33

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Solution

The fourth proportional to 1,269.95, 1,752.28 and 710.33 is: 980.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269.95 : 1,752.28 = 710.33 : x
  2. Step 2: Convert to fraction form
    1,269.95/1,752.28 = 710.33/x
  3. Step 3: Cross multiply
    1,269.95x = 1,752.28 × 710.33
  4. Step 4: Simplify right side
    1,269.95x = 1,244,697.05
  5. Step 5: Solve for x
    x = 1,244,697.05/1,269.95
  6. Step 6: Final answer
    x = 980.12

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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.