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Finding the Fourth Proportional to 676.75, 931.13 and 529.13

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Solution

The fourth proportional to 676.75, 931.13 and 529.13 is: 728.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.75 : 931.13 = 529.13 : x
  2. Step 2: Convert to fraction form
    676.75/931.13 = 529.13/x
  3. Step 3: Cross multiply
    676.75x = 931.13 × 529.13
  4. Step 4: Simplify right side
    676.75x = 492,688.82
  5. Step 5: Solve for x
    x = 492,688.82/676.75
  6. Step 6: Final answer
    x = 728.02

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Find fourth proportional to 338.38, 465.57 and 264.57
Half scale
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Double scale
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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.