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Finding the Fourth Proportional to 1,156.70, 1,596.28 and 632.78

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Solution

The fourth proportional to 1,156.70, 1,596.28 and 632.78 is: 873.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.70 : 1,596.28 = 632.78 : x
  2. Step 2: Convert to fraction form
    1,156.70/1,596.28 = 632.78/x
  3. Step 3: Cross multiply
    1,156.70x = 1,596.28 × 632.78
  4. Step 4: Simplify right side
    1,156.70x = 1,010,094.06
  5. Step 5: Solve for x
    x = 1,010,094.06/1,156.70
  6. Step 6: Final answer
    x = 873.25

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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.