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Finding the Fourth Proportional to 1,095, 1,643.01 and 547.23

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Solution

The fourth proportional to 1,095, 1,643.01 and 547.23 is: 821.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095 : 1,643.01 = 547.23 : x
  2. Step 2: Convert to fraction form
    1,095/1,643.01 = 547.23/x
  3. Step 3: Cross multiply
    1,095x = 1,643.01 × 547.23
  4. Step 4: Simplify right side
    1,095x = 899,104.36
  5. Step 5: Solve for x
    x = 899,104.36/1,095
  6. Step 6: Final answer
    x = 821.10

Related Problems

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Half scale
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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.