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Finding the Fourth Proportional to 602.91, 904.32 and 212.93

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Solution

The fourth proportional to 602.91, 904.32 and 212.93 is: 319.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.91 : 904.32 = 212.93 : x
  2. Step 2: Convert to fraction form
    602.91/904.32 = 212.93/x
  3. Step 3: Cross multiply
    602.91x = 904.32 × 212.93
  4. Step 4: Simplify right side
    602.91x = 192,552.34
  5. Step 5: Solve for x
    x = 192,552.34/602.91
  6. Step 6: Final answer
    x = 319.37

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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.