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Finding the Fourth Proportional to 740.07, 1,110.51 and 557.01

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Solution

The fourth proportional to 740.07, 1,110.51 and 557.01 is: 835.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.07 : 1,110.51 = 557.01 : x
  2. Step 2: Convert to fraction form
    740.07/1,110.51 = 557.01/x
  3. Step 3: Cross multiply
    740.07x = 1,110.51 × 557.01
  4. Step 4: Simplify right side
    740.07x = 618,565.18
  5. Step 5: Solve for x
    x = 618,565.18/740.07
  6. Step 6: Final answer
    x = 835.82

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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.