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Finding the Fourth Proportional to 929.16, 1,282.10 and 635.13

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Solution

The fourth proportional to 929.16, 1,282.10 and 635.13 is: 876.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.16 : 1,282.10 = 635.13 : x
  2. Step 2: Convert to fraction form
    929.16/1,282.10 = 635.13/x
  3. Step 3: Cross multiply
    929.16x = 1,282.10 × 635.13
  4. Step 4: Simplify right side
    929.16x = 814,297.00
  5. Step 5: Solve for x
    x = 814,297.00/929.16
  6. Step 6: Final answer
    x = 876.38

Related Problems

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Half scale
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Double scale
Find fourth proportional to 930.16, 1,283.47 and 636.13
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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.