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Finding the Fourth Proportional to 385.84, 575.76 and 376.57

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Solution

The fourth proportional to 385.84, 575.76 and 376.57 is: 561.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.84 : 575.76 = 376.57 : x
  2. Step 2: Convert to fraction form
    385.84/575.76 = 376.57/x
  3. Step 3: Cross multiply
    385.84x = 575.76 × 376.57
  4. Step 4: Simplify right side
    385.84x = 216,815.58
  5. Step 5: Solve for x
    x = 216,815.58/385.84
  6. Step 6: Final answer
    x = 561.93

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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.