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Finding the Fourth Proportional to 880.34, 1,214.80 and 507.30

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Solution

The fourth proportional to 880.34, 1,214.80 and 507.30 is: 700.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.34 : 1,214.80 = 507.30 : x
  2. Step 2: Convert to fraction form
    880.34/1,214.80 = 507.30/x
  3. Step 3: Cross multiply
    880.34x = 1,214.80 × 507.30
  4. Step 4: Simplify right side
    880.34x = 616,262.22
  5. Step 5: Solve for x
    x = 616,262.22/880.34
  6. Step 6: Final answer
    x = 700.03

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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.