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Finding the Fourth Proportional to 437.16, 603.28 and 290

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Solution

The fourth proportional to 437.16, 603.28 and 290 is: 400.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.16 : 603.28 = 290 : x
  2. Step 2: Convert to fraction form
    437.16/603.28 = 290/x
  3. Step 3: Cross multiply
    437.16x = 603.28 × 290
  4. Step 4: Simplify right side
    437.16x = 174,951.20
  5. Step 5: Solve for x
    x = 174,951.20/437.16
  6. Step 6: Final answer
    x = 400.20

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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.