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Finding the Fourth Proportional to 1,203.03, 1,657.53 and 902.93

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Solution

The fourth proportional to 1,203.03, 1,657.53 and 902.93 is: 1,244.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203.03 : 1,657.53 = 902.93 : x
  2. Step 2: Convert to fraction form
    1,203.03/1,657.53 = 902.93/x
  3. Step 3: Cross multiply
    1,203.03x = 1,657.53 × 902.93
  4. Step 4: Simplify right side
    1,203.03x = 1,496,625.28
  5. Step 5: Solve for x
    x = 1,496,625.28/1,203.03
  6. Step 6: Final answer
    x = 1,244.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.