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Finding the Fourth Proportional to 909.26, 1,254.72 and 536.25

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Solution

The fourth proportional to 909.26, 1,254.72 and 536.25 is: 739.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.26 : 1,254.72 = 536.25 : x
  2. Step 2: Convert to fraction form
    909.26/1,254.72 = 536.25/x
  3. Step 3: Cross multiply
    909.26x = 1,254.72 × 536.25
  4. Step 4: Simplify right side
    909.26x = 672,843.60
  5. Step 5: Solve for x
    x = 672,843.60/909.26
  6. Step 6: Final answer
    x = 739.99

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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.