Home / 1,135.08-1,566.45-637.70

Finding the Fourth Proportional to 1,135.08, 1,566.45 and 637.70

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Solution

The fourth proportional to 1,135.08, 1,566.45 and 637.70 is: 880.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.08 : 1,566.45 = 637.70 : x
  2. Step 2: Convert to fraction form
    1,135.08/1,566.45 = 637.70/x
  3. Step 3: Cross multiply
    1,135.08x = 1,566.45 × 637.70
  4. Step 4: Simplify right side
    1,135.08x = 998,925.17
  5. Step 5: Solve for x
    x = 998,925.17/1,135.08
  6. Step 6: Final answer
    x = 880.05

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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.