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Finding the Fourth Proportional to 740.02, 1,110.04 and 253.05

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Solution

The fourth proportional to 740.02, 1,110.04 and 253.05 is: 379.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.02 : 1,110.04 = 253.05 : x
  2. Step 2: Convert to fraction form
    740.02/1,110.04 = 253.05/x
  3. Step 3: Cross multiply
    740.02x = 1,110.04 × 253.05
  4. Step 4: Simplify right side
    740.02x = 280,894.99
  5. Step 5: Solve for x
    x = 280,894.99/740.02
  6. Step 6: Final answer
    x = 379.58

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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.