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Finding the Fourth Proportional to 783.44, 1,081.16 and 429.37

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Solution

The fourth proportional to 783.44, 1,081.16 and 429.37 is: 592.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    783.44 : 1,081.16 = 429.37 : x
  2. Step 2: Convert to fraction form
    783.44/1,081.16 = 429.37/x
  3. Step 3: Cross multiply
    783.44x = 1,081.16 × 429.37
  4. Step 4: Simplify right side
    783.44x = 464,217.67
  5. Step 5: Solve for x
    x = 464,217.67/783.44
  6. Step 6: Final answer
    x = 592.54

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Double scale
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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.