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Finding the Fourth Proportional to 1,101.94, 1,652.96 and 485.51

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Solution

The fourth proportional to 1,101.94, 1,652.96 and 485.51 is: 728.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.94 : 1,652.96 = 485.51 : x
  2. Step 2: Convert to fraction form
    1,101.94/1,652.96 = 485.51/x
  3. Step 3: Cross multiply
    1,101.94x = 1,652.96 × 485.51
  4. Step 4: Simplify right side
    1,101.94x = 802,521.15
  5. Step 5: Solve for x
    x = 802,521.15/1,101.94
  6. Step 6: Final answer
    x = 728.28

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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.