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Finding the Fourth Proportional to 467.10, 643.34 and 404.93

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Solution

The fourth proportional to 467.10, 643.34 and 404.93 is: 557.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.10 : 643.34 = 404.93 : x
  2. Step 2: Convert to fraction form
    467.10/643.34 = 404.93/x
  3. Step 3: Cross multiply
    467.10x = 643.34 × 404.93
  4. Step 4: Simplify right side
    467.10x = 260,510.29
  5. Step 5: Solve for x
    x = 260,510.29/467.10
  6. Step 6: Final answer
    x = 557.72

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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.