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Finding the Fourth Proportional to 1,094.76, 1,510.90 and 629

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Solution

The fourth proportional to 1,094.76, 1,510.90 and 629 is: 868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,094.76 : 1,510.90 = 629 : x
  2. Step 2: Convert to fraction form
    1,094.76/1,510.90 = 629/x
  3. Step 3: Cross multiply
    1,094.76x = 1,510.90 × 629
  4. Step 4: Simplify right side
    1,094.76x = 950,356.10
  5. Step 5: Solve for x
    x = 950,356.10/1,094.76
  6. Step 6: Final answer
    x = 868.10

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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.