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Finding the Fourth Proportional to 590.02, 885.12 and 157.21

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Solution

The fourth proportional to 590.02, 885.12 and 157.21 is: 235.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.02 : 885.12 = 157.21 : x
  2. Step 2: Convert to fraction form
    590.02/885.12 = 157.21/x
  3. Step 3: Cross multiply
    590.02x = 885.12 × 157.21
  4. Step 4: Simplify right side
    590.02x = 139,149.72
  5. Step 5: Solve for x
    x = 139,149.72/590.02
  6. Step 6: Final answer
    x = 235.84

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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.