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Finding the Fourth Proportional to 1,554.02, 2,330.40 and 773.74

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Solution

The fourth proportional to 1,554.02, 2,330.40 and 773.74 is: 1,160.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.02 : 2,330.40 = 773.74 : x
  2. Step 2: Convert to fraction form
    1,554.02/2,330.40 = 773.74/x
  3. Step 3: Cross multiply
    1,554.02x = 2,330.40 × 773.74
  4. Step 4: Simplify right side
    1,554.02x = 1,803,117.87
  5. Step 5: Solve for x
    x = 1,803,117.87/1,554.02
  6. Step 6: Final answer
    x = 1,160.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.