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Finding the Fourth Proportional to 1,603.89, 2,406.20 and 508.32

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Solution

The fourth proportional to 1,603.89, 2,406.20 and 508.32 is: 762.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.89 : 2,406.20 = 508.32 : x
  2. Step 2: Convert to fraction form
    1,603.89/2,406.20 = 508.32/x
  3. Step 3: Cross multiply
    1,603.89x = 2,406.20 × 508.32
  4. Step 4: Simplify right side
    1,603.89x = 1,223,117.04
  5. Step 5: Solve for x
    x = 1,223,117.04/1,603.89
  6. Step 6: Final answer
    x = 762.59

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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.