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Finding the Fourth Proportional to 874.77, 1,317.33 and 632.98

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Solution

The fourth proportional to 874.77, 1,317.33 and 632.98 is: 953.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    874.77 : 1,317.33 = 632.98 : x
  2. Step 2: Convert to fraction form
    874.77/1,317.33 = 632.98/x
  3. Step 3: Cross multiply
    874.77x = 1,317.33 × 632.98
  4. Step 4: Simplify right side
    874.77x = 833,843.54
  5. Step 5: Solve for x
    x = 833,843.54/874.77
  6. Step 6: Final answer
    x = 953.22

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.