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Finding the Fourth Proportional to 602.66, 904.05 and 438.63

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Solution

The fourth proportional to 602.66, 904.05 and 438.63 is: 657.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.66 : 904.05 = 438.63 : x
  2. Step 2: Convert to fraction form
    602.66/904.05 = 438.63/x
  3. Step 3: Cross multiply
    602.66x = 904.05 × 438.63
  4. Step 4: Simplify right side
    602.66x = 396,543.45
  5. Step 5: Solve for x
    x = 396,543.45/602.66
  6. Step 6: Final answer
    x = 657.99

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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.