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Finding the Fourth Proportional to 560.86, 841.74 and 388.74

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Solution

The fourth proportional to 560.86, 841.74 and 388.74 is: 583.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.86 : 841.74 = 388.74 : x
  2. Step 2: Convert to fraction form
    560.86/841.74 = 388.74/x
  3. Step 3: Cross multiply
    560.86x = 841.74 × 388.74
  4. Step 4: Simplify right side
    560.86x = 327,215.01
  5. Step 5: Solve for x
    x = 327,215.01/560.86
  6. Step 6: Final answer
    x = 583.41

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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.