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Finding the Fourth Proportional to 602.64, 903.18 and 309.90

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Solution

The fourth proportional to 602.64, 903.18 and 309.90 is: 464.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.64 : 903.18 = 309.90 : x
  2. Step 2: Convert to fraction form
    602.64/903.18 = 309.90/x
  3. Step 3: Cross multiply
    602.64x = 903.18 × 309.90
  4. Step 4: Simplify right side
    602.64x = 279,895.48
  5. Step 5: Solve for x
    x = 279,895.48/602.64
  6. Step 6: Final answer
    x = 464.45

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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.