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Finding the Fourth Proportional to 1,094.89, 1,642.57 and 314.89

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Solution

The fourth proportional to 1,094.89, 1,642.57 and 314.89 is: 472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,094.89 : 1,642.57 = 314.89 : x
  2. Step 2: Convert to fraction form
    1,094.89/1,642.57 = 314.89/x
  3. Step 3: Cross multiply
    1,094.89x = 1,642.57 × 314.89
  4. Step 4: Simplify right side
    1,094.89x = 517,228.87
  5. Step 5: Solve for x
    x = 517,228.87/1,094.89
  6. Step 6: Final answer
    x = 472.40

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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.