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Finding the Fourth Proportional to 1,105.48, 1,525.64 and 608.18

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Solution

The fourth proportional to 1,105.48, 1,525.64 and 608.18 is: 839.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105.48 : 1,525.64 = 608.18 : x
  2. Step 2: Convert to fraction form
    1,105.48/1,525.64 = 608.18/x
  3. Step 3: Cross multiply
    1,105.48x = 1,525.64 × 608.18
  4. Step 4: Simplify right side
    1,105.48x = 927,853.07
  5. Step 5: Solve for x
    x = 927,853.07/1,105.48
  6. Step 6: Final answer
    x = 839.32

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1.5x scale

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.