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Finding the Fourth Proportional to 615.34, 848.19 and 419.14

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Solution

The fourth proportional to 615.34, 848.19 and 419.14 is: 577.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.34 : 848.19 = 419.14 : x
  2. Step 2: Convert to fraction form
    615.34/848.19 = 419.14/x
  3. Step 3: Cross multiply
    615.34x = 848.19 × 419.14
  4. Step 4: Simplify right side
    615.34x = 355,510.36
  5. Step 5: Solve for x
    x = 355,510.36/615.34
  6. Step 6: Final answer
    x = 577.75

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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.