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Finding the Fourth Proportional to 384.77, 577.20 and 153.63

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Solution

The fourth proportional to 384.77, 577.20 and 153.63 is: 230.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.77 : 577.20 = 153.63 : x
  2. Step 2: Convert to fraction form
    384.77/577.20 = 153.63/x
  3. Step 3: Cross multiply
    384.77x = 577.20 × 153.63
  4. Step 4: Simplify right side
    384.77x = 88,675.24
  5. Step 5: Solve for x
    x = 88,675.24/384.77
  6. Step 6: Final answer
    x = 230.47

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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.