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Finding the Fourth Proportional to 999.02, 1,498.71 and 340.95

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Solution

The fourth proportional to 999.02, 1,498.71 and 340.95 is: 511.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.02 : 1,498.71 = 340.95 : x
  2. Step 2: Convert to fraction form
    999.02/1,498.71 = 340.95/x
  3. Step 3: Cross multiply
    999.02x = 1,498.71 × 340.95
  4. Step 4: Simplify right side
    999.02x = 510,985.17
  5. Step 5: Solve for x
    x = 510,985.17/999.02
  6. Step 6: Final answer
    x = 511.49

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Double scale
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1.5x scale

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.