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Finding the Fourth Proportional to 907.32, 1,252.26 and 711.54

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Solution

The fourth proportional to 907.32, 1,252.26 and 711.54 is: 982.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.32 : 1,252.26 = 711.54 : x
  2. Step 2: Convert to fraction form
    907.32/1,252.26 = 711.54/x
  3. Step 3: Cross multiply
    907.32x = 1,252.26 × 711.54
  4. Step 4: Simplify right side
    907.32x = 891,033.08
  5. Step 5: Solve for x
    x = 891,033.08/907.32
  6. Step 6: Final answer
    x = 982.05

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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.