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Finding the Fourth Proportional to 602.40, 903.12 and 499.68

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Solution

The fourth proportional to 602.40, 903.12 and 499.68 is: 749.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.40 : 903.12 = 499.68 : x
  2. Step 2: Convert to fraction form
    602.40/903.12 = 499.68/x
  3. Step 3: Cross multiply
    602.40x = 903.12 × 499.68
  4. Step 4: Simplify right side
    602.40x = 451,271.00
  5. Step 5: Solve for x
    x = 451,271.00/602.40
  6. Step 6: Final answer
    x = 749.12

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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.