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Finding the Fourth Proportional to 923.66, 1,275.76 and 674.58

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Solution

The fourth proportional to 923.66, 1,275.76 and 674.58 is: 931.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.66 : 1,275.76 = 674.58 : x
  2. Step 2: Convert to fraction form
    923.66/1,275.76 = 674.58/x
  3. Step 3: Cross multiply
    923.66x = 1,275.76 × 674.58
  4. Step 4: Simplify right side
    923.66x = 860,602.18
  5. Step 5: Solve for x
    x = 860,602.18/923.66
  6. Step 6: Final answer
    x = 931.73

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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.