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Finding the Fourth Proportional to 784.42, 1,081.23 and 532.26

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Solution

The fourth proportional to 784.42, 1,081.23 and 532.26 is: 733.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    784.42 : 1,081.23 = 532.26 : x
  2. Step 2: Convert to fraction form
    784.42/1,081.23 = 532.26/x
  3. Step 3: Cross multiply
    784.42x = 1,081.23 × 532.26
  4. Step 4: Simplify right side
    784.42x = 575,495.48
  5. Step 5: Solve for x
    x = 575,495.48/784.42
  6. Step 6: Final answer
    x = 733.66

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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.