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Finding the Fourth Proportional to 1,551.95, 2,328.15 and 511.59

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Solution

The fourth proportional to 1,551.95, 2,328.15 and 511.59 is: 767.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.95 : 2,328.15 = 511.59 : x
  2. Step 2: Convert to fraction form
    1,551.95/2,328.15 = 511.59/x
  3. Step 3: Cross multiply
    1,551.95x = 2,328.15 × 511.59
  4. Step 4: Simplify right side
    1,551.95x = 1,191,058.26
  5. Step 5: Solve for x
    x = 1,191,058.26/1,551.95
  6. Step 6: Final answer
    x = 767.46

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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.