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Finding the Fourth Proportional to 1,605.07, 2,408.15 and 630.64

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Solution

The fourth proportional to 1,605.07, 2,408.15 and 630.64 is: 946.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.07 : 2,408.15 = 630.64 : x
  2. Step 2: Convert to fraction form
    1,605.07/2,408.15 = 630.64/x
  3. Step 3: Cross multiply
    1,605.07x = 2,408.15 × 630.64
  4. Step 4: Simplify right side
    1,605.07x = 1,518,675.72
  5. Step 5: Solve for x
    x = 1,518,675.72/1,605.07
  6. Step 6: Final answer
    x = 946.17

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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.