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Finding the Fourth Proportional to 615.22, 848.10 and 440.26

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Solution

The fourth proportional to 615.22, 848.10 and 440.26 is: 606.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.22 : 848.10 = 440.26 : x
  2. Step 2: Convert to fraction form
    615.22/848.10 = 440.26/x
  3. Step 3: Cross multiply
    615.22x = 848.10 × 440.26
  4. Step 4: Simplify right side
    615.22x = 373,384.51
  5. Step 5: Solve for x
    x = 373,384.51/615.22
  6. Step 6: Final answer
    x = 606.91

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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.