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Finding the Fourth Proportional to 932.41, 1,285.54 and 783.60

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Solution

The fourth proportional to 932.41, 1,285.54 and 783.60 is: 1,080.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.41 : 1,285.54 = 783.60 : x
  2. Step 2: Convert to fraction form
    932.41/1,285.54 = 783.60/x
  3. Step 3: Cross multiply
    932.41x = 1,285.54 × 783.60
  4. Step 4: Simplify right side
    932.41x = 1,007,349.14
  5. Step 5: Solve for x
    x = 1,007,349.14/932.41
  6. Step 6: Final answer
    x = 1,080.37

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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.