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Finding the Fourth Proportional to 914.36, 1,371.54 and 401

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Solution

The fourth proportional to 914.36, 1,371.54 and 401 is: 601.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.36 : 1,371.54 = 401 : x
  2. Step 2: Convert to fraction form
    914.36/1,371.54 = 401/x
  3. Step 3: Cross multiply
    914.36x = 1,371.54 × 401
  4. Step 4: Simplify right side
    914.36x = 549,987.54
  5. Step 5: Solve for x
    x = 549,987.54/914.36
  6. Step 6: Final answer
    x = 601.50

Related Problems

Find fourth proportional to 457.18, 685.77 and 200.50
Half scale
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Double scale
Find fourth proportional to 915.36, 1,373.04 and 402
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.