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Finding the Fourth Proportional to 893.47, 1,339.94 and 345.52

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Solution

The fourth proportional to 893.47, 1,339.94 and 345.52 is: 518.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.47 : 1,339.94 = 345.52 : x
  2. Step 2: Convert to fraction form
    893.47/1,339.94 = 345.52/x
  3. Step 3: Cross multiply
    893.47x = 1,339.94 × 345.52
  4. Step 4: Simplify right side
    893.47x = 462,976.07
  5. Step 5: Solve for x
    x = 462,976.07/893.47
  6. Step 6: Final answer
    x = 518.18

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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.