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Finding the Fourth Proportional to 897.36, 1,238.06 and 543.39

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Solution

The fourth proportional to 897.36, 1,238.06 and 543.39 is: 749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.36 : 1,238.06 = 543.39 : x
  2. Step 2: Convert to fraction form
    897.36/1,238.06 = 543.39/x
  3. Step 3: Cross multiply
    897.36x = 1,238.06 × 543.39
  4. Step 4: Simplify right side
    897.36x = 672,746.71
  5. Step 5: Solve for x
    x = 672,746.71/897.36
  6. Step 6: Final answer
    x = 749.70

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Double scale
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1.5x scale

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.