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Finding the Fourth Proportional to 953.11, 1,430.15 and 376.39

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Solution

The fourth proportional to 953.11, 1,430.15 and 376.39 is: 564.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.11 : 1,430.15 = 376.39 : x
  2. Step 2: Convert to fraction form
    953.11/1,430.15 = 376.39/x
  3. Step 3: Cross multiply
    953.11x = 1,430.15 × 376.39
  4. Step 4: Simplify right side
    953.11x = 538,292.28
  5. Step 5: Solve for x
    x = 538,292.28/953.11
  6. Step 6: Final answer
    x = 564.77

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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.