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Finding the Fourth Proportional to 651.14, 898.44 and 385.57

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Solution

The fourth proportional to 651.14, 898.44 and 385.57 is: 532.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.14 : 898.44 = 385.57 : x
  2. Step 2: Convert to fraction form
    651.14/898.44 = 385.57/x
  3. Step 3: Cross multiply
    651.14x = 898.44 × 385.57
  4. Step 4: Simplify right side
    651.14x = 346,411.51
  5. Step 5: Solve for x
    x = 346,411.51/651.14
  6. Step 6: Final answer
    x = 532.01

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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.