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Finding the Fourth Proportional to 614.99, 848.29 and 393.86

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Solution

The fourth proportional to 614.99, 848.29 and 393.86 is: 543.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.99 : 848.29 = 393.86 : x
  2. Step 2: Convert to fraction form
    614.99/848.29 = 393.86/x
  3. Step 3: Cross multiply
    614.99x = 848.29 × 393.86
  4. Step 4: Simplify right side
    614.99x = 334,102.27
  5. Step 5: Solve for x
    x = 334,102.27/614.99
  6. Step 6: Final answer
    x = 543.27

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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.