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Finding the Fourth Proportional to 404.52, 607.14 and 260.40

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Solution

The fourth proportional to 404.52, 607.14 and 260.40 is: 390.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.52 : 607.14 = 260.40 : x
  2. Step 2: Convert to fraction form
    404.52/607.14 = 260.40/x
  3. Step 3: Cross multiply
    404.52x = 607.14 × 260.40
  4. Step 4: Simplify right side
    404.52x = 158,099.26
  5. Step 5: Solve for x
    x = 158,099.26/404.52
  6. Step 6: Final answer
    x = 390.83

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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.