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Finding the Fourth Proportional to 377.03, 561.47 and 353.68

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Solution

The fourth proportional to 377.03, 561.47 and 353.68 is: 526.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.03 : 561.47 = 353.68 : x
  2. Step 2: Convert to fraction form
    377.03/561.47 = 353.68/x
  3. Step 3: Cross multiply
    377.03x = 561.47 × 353.68
  4. Step 4: Simplify right side
    377.03x = 198,579.53
  5. Step 5: Solve for x
    x = 198,579.53/377.03
  6. Step 6: Final answer
    x = 526.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.