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Finding the Fourth Proportional to 929.94, 1,282.95 and 614.82

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Solution

The fourth proportional to 929.94, 1,282.95 and 614.82 is: 848.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.94 : 1,282.95 = 614.82 : x
  2. Step 2: Convert to fraction form
    929.94/1,282.95 = 614.82/x
  3. Step 3: Cross multiply
    929.94x = 1,282.95 × 614.82
  4. Step 4: Simplify right side
    929.94x = 788,783.32
  5. Step 5: Solve for x
    x = 788,783.32/929.94
  6. Step 6: Final answer
    x = 848.21

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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.