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Finding the Fourth Proportional to 584.45, 875.81 and 399.16

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Solution

The fourth proportional to 584.45, 875.81 and 399.16 is: 598.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.45 : 875.81 = 399.16 : x
  2. Step 2: Convert to fraction form
    584.45/875.81 = 399.16/x
  3. Step 3: Cross multiply
    584.45x = 875.81 × 399.16
  4. Step 4: Simplify right side
    584.45x = 349,590.41
  5. Step 5: Solve for x
    x = 349,590.41/584.45
  6. Step 6: Final answer
    x = 598.15

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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.