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Finding the Fourth Proportional to 1,670.11, 2,505.16 and 630.35

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Solution

The fourth proportional to 1,670.11, 2,505.16 and 630.35 is: 945.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.11 : 2,505.16 = 630.35 : x
  2. Step 2: Convert to fraction form
    1,670.11/2,505.16 = 630.35/x
  3. Step 3: Cross multiply
    1,670.11x = 2,505.16 × 630.35
  4. Step 4: Simplify right side
    1,670.11x = 1,579,113.50
  5. Step 5: Solve for x
    x = 1,579,113.50/1,670.11
  6. Step 6: Final answer
    x = 945.52

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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.