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Finding the Fourth Proportional to 617.10, 853.59 and 503.34

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Solution

The fourth proportional to 617.10, 853.59 and 503.34 is: 696.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.10 : 853.59 = 503.34 : x
  2. Step 2: Convert to fraction form
    617.10/853.59 = 503.34/x
  3. Step 3: Cross multiply
    617.10x = 853.59 × 503.34
  4. Step 4: Simplify right side
    617.10x = 429,645.99
  5. Step 5: Solve for x
    x = 429,645.99/617.10
  6. Step 6: Final answer
    x = 696.23

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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.