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Finding the Fourth Proportional to 880.04, 1,214.28 and 530.75

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Solution

The fourth proportional to 880.04, 1,214.28 and 530.75 is: 732.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.04 : 1,214.28 = 530.75 : x
  2. Step 2: Convert to fraction form
    880.04/1,214.28 = 530.75/x
  3. Step 3: Cross multiply
    880.04x = 1,214.28 × 530.75
  4. Step 4: Simplify right side
    880.04x = 644,479.11
  5. Step 5: Solve for x
    x = 644,479.11/880.04
  6. Step 6: Final answer
    x = 732.33

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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.