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Finding the Fourth Proportional to 1,137.05, 1,569.20 and 632.98

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Solution

The fourth proportional to 1,137.05, 1,569.20 and 632.98 is: 873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.05 : 1,569.20 = 632.98 : x
  2. Step 2: Convert to fraction form
    1,137.05/1,569.20 = 632.98/x
  3. Step 3: Cross multiply
    1,137.05x = 1,569.20 × 632.98
  4. Step 4: Simplify right side
    1,137.05x = 993,272.22
  5. Step 5: Solve for x
    x = 993,272.22/1,137.05
  6. Step 6: Final answer
    x = 873.55

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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.