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Finding the Fourth Proportional to 404.81, 607.13 and 130.95

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Solution

The fourth proportional to 404.81, 607.13 and 130.95 is: 196.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.81 : 607.13 = 130.95 : x
  2. Step 2: Convert to fraction form
    404.81/607.13 = 130.95/x
  3. Step 3: Cross multiply
    404.81x = 607.13 × 130.95
  4. Step 4: Simplify right side
    404.81x = 79,503.67
  5. Step 5: Solve for x
    x = 79,503.67/404.81
  6. Step 6: Final answer
    x = 196.40

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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.